Mixing-valve for gas or gasolene engines.



N0. 7|U,84I. Patented Oct. 7, I902.

A. P. BRUSH.

MlXlNG VALVE FOB GAS 0R GASOLENE ENGINES.

(Applica tion filed June 10, 1901. Renewed Sept. 11, 1902.)

2 Sheets$heet I.

(No Model.)

MVAWTOR.

I II [TNESSES- No. 710,841. Pa tented on. 7, I902. A. P. BRUSH.

MIXING VALVE FOR GAS 0R GASOLENE ENGINES.

(Application filed une 10, 1901. Renewed Sept. .11, 1902.) (No Model.) 2 Sheets-Shet 2.

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UNITED STATES PATENT OFFICE.

ALANSONI. BRUSH, or DETROIT, MICHIGAN.

MlXlNG-VALVE 'F-OR'GAS OR GASOLENE ENGINES.

SPECIFICATION forming part of Letters Patent N 0. 710,841, dated October 7,1902. Application filed June 10, 1901. Renewed $eptember 11, 1902' Serial No; lNO 11195013 T 0 all whom, it rnrty concern."

Be it known that I, ALA NSON P. BRUSH, a citizen of the United States, residing at Detroit, county of IVayne, State of Michigan, have invented a certain newand useful lmprovement in Mixing-Valves for Gas or Gasolene Engines; and I declare the following to be a full, clear,'andexact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention has for its object especially a mixing-valve for gas and gasolene engines; but the same is designed to be employed wherever an explosive mixture of gas or gasolene and air is required.

My invention consists of the construction,

combination, and arrangement of devices and appliances hereinafter specified and claimed, and illustrated in the accompanying drawings, in which- Figure l is a view in side elevation, showing a portion of an engine with my mixingvalve attached thereto. Fig. 2 is a plan view illustrating my invention. Fig. 3 is a vertical section on the line 3 3, Fig. 2. Fig. 4 is a horizontal sect-ion on the line 4 4, Fig. 3. Fig. 5 illustrates a modification of my improved valve in vertical section, the same being adapted particularly for mixing gas and air. Fig. 6 illustrates another modification in vertical section. Fig. 7 is a view in vertical section on the line 7 7, Fig. 2. Fig. 8 is a detail view of the controlling-valve.

My invention is more especially designed to provide a valve of the vacuum-opening type to secure superior certainty and accuracy of operation; also, the combination in a single structure of a mixing-valve for both gas and gasolene with air, and in a gas and air mixing valve to provide for satisfactory handling of varying gas-pressures. 7

It is well understood that in starting an engine it is customary to get the primary explosions by a priming of gasolene; but by my invention I am enabled to start an engine without any priming and by simply turning on thegas slowly and either turning the engine by some starting device or by hand.

I carry out my invention as follows:

In the drawings a portion of the engine cylinder is shown at a, Z) being a customary governing-valve.

c is a valve for cutting olf individual cylinders.

Attached to the intake of the governingvalve 2) is the valve-casing of my improved valve (indicated at 61;) This casing may be formed with a flange e or otherwise for conveniently securing the casing to the adjacent or intake end of the governing-valve b. The valve-case d is provided with an arc-shaped chamberffor the reception of air and with an arc-shaped chamberg for the reception of gas, the two chambers fand 9 being separated by inwardly-projecting walls, (indicated at h and c'.) Within the valve-case is located a valve, (shown 'in detail in Fig. 8 and indicated by the letterj,) said valve being formed with a cylindrical wall, in which is formed an elongated arc-shapedopening, (indicated at 75,) the valve, in other words, being constructed of cylindrical form,closed at one end, as indicated at Z, and formed with an elongated port or ports 75. The cylindrical valve j is made to open by vacuum Within the valvecase. When the valve is entirely closed, the port or ports are also closed by the wall of said valveas indicated, for example, in Fig. 3. When the valve is in an open position, more or less, the port or ports is open into the gas and air chambersfand g, hereinbefore described. The cylindrical valve j is also rotatable within the valve-casing. By reference more particularly to Fig. 4 it will readily be seen that by rotating the cylindrical valve in one di rection or the other, as may be desired, the port or ports 76, opening into the air and gas chambers of the valve, may have their ratios varied as desired. It will readily be seen by reference to Fig. 4 that should the cylindrical valve be rotated, for example, to the right, the port or ports would have a larger opening into the gas-chamber g, while the opening of the valve into the air-chamber would be proportionately diminished. Vice versa, should the cylindrical valve be moved to the left the opening of the valve into the gas-chamber would be diminished and the opening of the valve into the air-chamber would be increased. Therefore in order to vary the ratios of the openings of the valve into the air and gas chambers, respectively, it is only necessary to rotate the valve a re- ICO quired distance. lire case is formed with a gas-inlet opening m, leading into the gas chamber g, and with an air-inlet opening at, opening into the air-chamberf, and with an outlet-opening (indicated at p) communicating into the intake of the engine. The case is provided, furthermore, with an adjustable seat or stop g for the valve, which may be provided with a lock-nut or analogous device (indicated at r) to hold the seat or stop in place. The valve is provided with a guide pin or stem .9, passing through the seat. The valve, however, may be rotated in anyother suitable manner. The valve-seat is made rotatable and to this end may be provided with any suitable device for rotating the sameas, for example, an arm 6. it will readily be seen that the valve may be rotated as required by simply rotating this seat, as the valve is rotated therewith. The valve may be seated in normal position either by gravity under certain locations or by a suitable mechanical device, such as a spring, (indicated at u,) where the valve is in the position indicated in the accompanying drawings. A spring or similar device may be employed to restore it to normal position; but should the valve be inverted it would assume normal position by gravity when free so to do.

In Fig. 5 the valve is shown constructed only for the mixture of gas and air; but where it is desired to adapt the valve to mix either gas or "asolene and air I provide within the outer valve-case (Z an inner valve case r, forming a gasolene-chamber it therewithin, into which gasolene may be admitted from the feed pipe 3?. The inner valvechamber is provided with a valve (indicated at preferably constructed with a tapering stem 2 to be opened when the valve j forms contact therewith in the opening of the valve thereby opening also the valve y to admit gasolene into the interior chamber of the valve j. Thestem 2 being made tapering it will be evident that the amount of opening through the gasoiene-cliamber '20 will be proportionate to the unseating of the valve 11 so as to admit a greater or less supply of gasolene into the chamber of the valve (1, proportionate to the greater or smaller opening of the mixing-valve.

In Fig. (3 is shown a modification wherein the valve 7' is provided with plural ports k k and the valve-case is provided with plural air-inlet openings (indicated at n 92) and corresponding to the arc-shaped air-chamberf.

The operation of the device is as follows: It is evident that when there is no demand upon the valve both the and air ports are closed and no flow of either gas or air can take place. The same condition of the valve occurs also where gasolene and air are mixed by the valve. When the engine in tion or any method is used to ion vacu u m within the va.l' .'ecase,the va caused to travel in iin the valveas ing proportionat enings into th air chambers, (when the valve is used for mixing air and gas,) the amount of opening being only sufficient to supply the demand. Thus it will be seen that no matter how small or how great the demand maybe the mixture of gas and air will be in the same ratio, and slight variations of pressure upon the gas and air will not affect materially said proportions.

The operation of the valve when gasolene is mixed with air will be understood, the gasolene being admitted in the valve-chamber through the interior chamber 7), as'hereinbefore described, in proportion to the opening of the valvej.

It will be seen that if the supply of gas be entirely shut off by the closing of the valve in the gas-supply pipe the result would be practically the same as if there were no opening from the gas-chamberg into the valve, as

indicated in Fig. 6, Where the valve is constructed exclusively for mixing gasolene and air. Under these conditions the effect of rotating the valve would besimply to vary the supply of air into the valve proportionate to the rotation of the valve. The valve is so constructed that the opening of the gasolenevalve is too small to give a proper mixture when the valve is so placed as to give the maximum air-opening and that said opening of the gasolene-valve is yet large enough to give too great a supply of gasolene when the valve is adjusted for a minimum air-opening, making it evident that there is a point between the maximum and minimum air-openings where the mixture will be proportionate for all demands up to the capacity of the valve. As above noted, the tapering of the valve-stem z affords an opening through the wall of the gasolene-chamber proportionate to the travel of the valve. It will readily be seen that there is no flow of gasolene or air into the valve when the valve j is seated. VJ'nen the valve is unseated, the proportion of the flow of gasolene and air would both be proportionate to the travel of the valve, and each flow will be induced by the partial vacuum which unseats the mixing-valve.

It will be obvious that when the valve is once adjusted for a proper mixture of gas and air or of gasolene and air no further attention is required, inasmuch as the mixture, no matter how slight or how great the demand, is uniform. it will be seen also that the proportions of the mixture are adjusted in one and the same valve.

The speed or power of the engine may be controlled either by limiting the travel of the valve in any suitable way or by placing a suitable cut-cit between the valve and the engine, as the governing-valve, (shown at b.)

It will readily be seen that all openings are closed for air, gas, or gasolene except when ing-va ve is unseated.

Yf ile I have described the valve '0 as a gasclene-inlet valve, 1 would have it understood that the valve may be employed for any suitable liquid hydrocarbon. The tubular mixing-valve is formed with a closed head, as shown at one end thereof, as already described, and indicated at Z. WVhere the valve is to be constructed particularly and only for the use of liquid hydrocarbon to be mixed with air, it will be understood that the gaschamber and gas-port might be omitted, as shown more particularly in Fig. 6, where the case is simply constructed with air-inlet openings. lVhere the valve is constructed with air and gas chambers and ports, together with a gasolene-inlet valve, as shown in Fig. 3, it will be understood also that when the supply of gas is shut off the action would be the same as though the valve were constructed simply for the mixture of gasolene and air, giving merely a variable air-port by the rotation of the tubular valve necessary to adjust the quality of the mixture. It will be seen, furthermore, that by my improved valve any desired adjustment of the quality of the explosive mixture may be secured by the rotation of the valve, while at any given adjustment the quality of the mixture will not be affected by the amount delivered, but will at all times be uniform at any given adjustment of the tubular valve.

The gasolene-feed pipe 1: is provided with a controlling-valve, as shown in Fig.

What I claim as my invention is 1. In a mixing-valve of the vacuum-opening type, the combination with a valve-case formed with an airehamber provided with a port leading thereinto, of a tubular rotatable and reoiprocatory mixing-valve constructed with a closed head and with a port whereby said chamber may communicate with the interior of the valve, and a gasolene-inlet valve leading into the interior of the tubular valve, said gasolene-inlet valve opened by unseating the tubular valve.

2. A vacuum-opening valve to deliver an explosive mixture having in combination a valve-case formed with air and gas chambers provided with ports leading thereinto, and a rotatable and reciprocatory mixing-valve constructed with a port through which both said chambers may communicate simultaneously with the interior of the valve, whereby the quality of the explosive mixture may be adjusted by the rotation of the valve, and whereby said mixture will be delivered of uniform quality at various openings of the valve.

3. A vacuum-opening valve to deliver an explosive mixture embodying in combination a valve-case provided with an opening, a retatable and reciprocatory tubular mixingvalve within said case constructed with a closed head, and with a port whereby the interior of the valve may communicate simultaneously with the opening in said case, and aliquid-hydrocarbon-inlet valve opening into the interior of the case and actuated by the opening of the mixing-valve, whereby the quality of the explosive mixture may be adjusted by the rotation of the mixing-valve,

and whereby the explosive mixture may be discharged with uniform quality at all openings of the mixing-valve.

4. A vacuum-opening valve having in combination a valve-case formed with air and gas chambers provided with ports leading thereinto, a rotatable and reciprocatory mixingvalve constructed with a port through which both said chambers may communicate with the interior of the valve, means to actuate the valve and means to restore said valve to its seat.

5. A vacuum-opening valve having in combination a valve-case formed with air and gas chambers provided with ports leading thereinto, and a rotatable and reciprocatory mixing-valve constructed with a port communicating with both said chambers, the port of the valve closed by the seating of the valve and opened by the unseating thereof.

6. A vacuum-opening valve having in combination a valve-case formed with air and gas chambers provided with ports, a rotatable and reciprocatory mixing-valve constructed with a port through which both of said chambers may communicate upon the proper operation of the valve, and a rotatable seat for rotating said valve.

7. A vacuum-opening valve having in combination a valve-case formed with air and gas chambers provided with ports leading thereinto, a tubular rotatable and reciprocatory mixing-valve constructed with a closed head and with a port through which both said chambers may communicate at once with the interior of the valve, and a liquid-hydrocarhon-inlet valve leading into the interior of the tubular valve.

8. A vacuum-opening valve having in combination a valve-case formed with air and gas chambers provided with ports leading thereinto, a tubular rotatable and reciprocatory mixing-valve constructed With a closed head and with a port through which both said chambers may communicate at once with the interior of the valve, and a liquid-hydrocarbon-inlet valve leading into the interior of the tubular valve, said inlet-valve opened by the opening of the tubular valve.

9. A vacuum-opening valve having in combination avalve-case formed with air and gas chambers provided with ports leading thereinto, a tubular rotatable and reciprocatory mixing-valve constructed with a closed head and with a port through which both said chambers may communicate at once with the interior of the valve, and a gasolene-inlet valve leading into the interior of the tubular valve,said gasolenednlet valve provided with a tapering stem.

in testimony whereof I sign this specification in the presence of two witnesses.

ALANSON P. BRUSH. Wi tn esses:

N. S. WRIGHT, M. HIoKnY. 

